One has to think about that one, but one also has to think about what can be done with the supply, with the terrain, the remaining assets and the mobility limits. Maybe the ground is tougher going for 40 km, but also maybe the tactical march limit into this bound is only 200 km and one has burned up about 30% of the committed troops, machines, the other supplies and fuel clearing forward as far as Arnheim. The logic is kind of grim here that one will have to move into a situation where the exploitation has to be achievable on what is left of the men, machines and supplies . Given optimistically that one only has about 140 km left and that the Germans will be beyond desperate, the good move, might be to drive for the sea and scream for help. How well defended are the West Friesian islands and is there any assault shipping and a spare division for Texel?
The bulk of the amphib fleet had been withdrawn, first for the ANVIL operation & then everything to the Pacific. Ike was left with a small lift, the Walchern island operation illustratting it. For what you are proposing a corps minimum is wanted. preferably a army. I've gamed this sort of thing out multiple times. One of the German advantages is the forming Volks army. All those men forming the Volkgrenadier units attacking eighty days later in the Ardennes were called up in September. Not all in well organized units, but armed and defending their home turf. Then there are the training units, anything else from the wrecked units rebuilding with the training units, the Volks Stiurm, Navy personnel, Lufwaffe ground units. Its no longer joyous French or Dutch & Belgian civilians offering wine & pointing to the location of le Boche. Its not even like March 1945 with demoralized Germans just being sullen. A 'Full Blooded Thrust of Forty Divisions' might fear nothing here, a dozen is asking for trouble, & even two dozen is problematic.